CVE-2025-40271

CVE-2025-40271 — procreaddirde rb-tree UAF LPE Proof-of-concept for a local privilege escalation vulnerability in the Linux kernel proc filesystem. The bug is a use-after-free in procreaddirde caused by rberase without RBCLEARNODE, leaving stale red-black tree links that can be raced during...

CVE-2025-40271

🔴 CVE-2025-40271: Critical Use-After-Free Vulnerability in the Linux Kernel 🛡️ Vulnerability Details CVE-2025-40271 is a critical Use-After-Free UAF vulnerability affecting the /proc filesystem of the Linux kernel. The flaw resides in the procreaddirde function, responsible for listing the content...

CVE-2024-21626-POC

CVE-2024-21626-POC Usage Instructions For educational/research purposes only. Any behavior not related to education/research is at your own risk. Usage docker build . -t cve-2024-21626 docker run -it --rm cve-2024-21626 bash /poc.sh Start another terminal /bin/bash.copy Note Different docker/runc...

CVE-2023-32784-keepass-linux

KeePass 2.53/cmdline files and store the pid of ones with the keyword KeePass in their commandline argument. It'll then acquire the adresses of memory maps in /proc//maps that aren't directly associated with a library, meaning they have an empty file path. It'll then store the memory of all those...

kernel: proc: protect ptrace_may_access() with exec_update_lock (FD links)

A flaw was found in the Linux kernel's proc filesystem. A local attacker with low privileges could exploit a race condition within the ptracemayaccess function when handling file descriptor links. This vulnerability arises because the system performs multiple task lookups without proper...

kernel: proc: protect ptrace_may_access() with exec_update_lock (FD links)

A flaw was found in the Linux kernel's proc filesystem. A local attacker with low privileges could exploit a race condition within the ptracemayaccess function when handling file descriptor links. This vulnerability arises because the system performs multiple task lookups without proper...

CLSA-2026-1768825166 kernel: Fix of 6 CVEs

fs/proc: fix uaf in procreaddirde CVE-2025-40271 - fs: fix UAF/GPF bug in nilfsmdtdestroy CVE-2022-2978 - Bluetooth: L2CAP: fix "bad unlock balance" in l2capdisconnectrsp CVE-2023-53297 - net: sched: sfb: fix null pointer access issue when sfbinit fails CVE-2022-50356 - ALSA: usb-audio: Fix size...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: scsi: core: Fixed a regression issue related to the removal of the procfs host directory The commit fc663711b944 “scsi: core: Removed the /proc/scsi/$procname directory earlier” fixed a bug related to module loading/unloading...

Astra Linux – vulnerability in linux-5.10, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: nubus: Partially revert proccreatesingledata conversion The conversion to proccreatesingledata introduced a regression wherein reading a file in /proc/bus/nubus results in a seg fault: grep -r . /proc/bus/nubus/e/ Data read fault...

Astra Linux - vulnerability in linux

In the Linux kernel, the following vulnerability has been resolved: can: bcm: Clear bo-bcmprocread after removeprocentry. SyZBot reported a warning in bcmrelease. 0 The fix addresses another warning that occurs when connect is called again for a socket whose connected device has already been...

CVE-2026-109971

A flaw was found in the clevis PKCS11 pin. The clevis-decrypt-pkcs11 script passes the PKCS11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem...

EUVD-2026-100956

A flaw was found in the clevis PKCS11 pin. The clevis-decrypt-pkcs11 script passes the PKCS11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem...

CVE-2026-109971 Clevis: clevis: pkcs#11 token pin exposed on command line via pkcs11-tool

A flaw was found in the clevis PKCS11 pin. The clevis-decrypt-pkcs11 script passes the PKCS11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem...

CVE-2026-109971

A flaw exists in the clevis PKCS#11 pin where the clevis-decrypt-pkcs11 script passes the PKCS#11 token PIN as a command-line argument to pkcs11-tool . This exposure allows any local user to view the sensitive PIN via process listing or the /proc filesystem. No specific remediation or exploit inf...

CVE-2026-109971 Clevis: clevis: pkcs#11 token pin exposed on command line via pkcs11-tool

A flaw was found in the clevis PKCS11 pin. The clevis-decrypt-pkcs11 script passes the PKCS11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem...

CVE-2026-109971

A flaw was found in the clevis PKCS11 pin. The clevis-decrypt-pkcs11 script passes the PKCS11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem. Mitigation No end-user mitigation is available for this issue. Th...

CVE-2026-109971: Invocation of Process Using Visible Sensitive Information

A flaw was found in the clevis PKCS11 pin. The clevis-decrypt-pkcs11 script passes the PKCS11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem...

CVE-2026-90164

A flaw was found in the Linux kernel's ksmbd server component. During the server's initialization process, an error in setting up internal process entries or counters is not handled correctly. This oversight can result in the system attempting to access a null pointer, which may lead to a system...

CVE-2026-97503

A flaw was found in the Linux kernel. This vulnerability can lead to a Denial of Service DoS or memory corruption due to a stack-based buffer overflow in the interrupt proc filesystem interface. When creating or removing directory entries for interrupt requests, the temporary buffer is too small ...

CVE-2026-89661

A flaw was found in the Linux kernel's Network File System Daemon NFSD. A local administrator with CAPSYSADMIN capabilities can trigger a use-after-free vulnerability by writing to /proc/fs/nfsd/unlockfilesystem after the NFSD server has shut down. This can lead to memory corruption, potentially...